GTX 330/330D Installation Manual 190-00207-02
Page 1-6 Rev. U
1.7 Technical Specifications
1.7.1 Environmental Qualification Form
It is the responsibility of the installing agency to obtain the latest revision of the GTX 330 Environmental
Qualification Form. The form is available directly from Garmin under the following part number:
GTX 330/GTX 33/GTX 328/GTX 23 Environmental Qualification Form, Garmin part number
005-00131-03
To obtain a copy of this form, see the dealer/OEM portion of the Garmin web site (
www.garmin.com).
The following tables present general environmental specifications. For detailed specifications, see the
Environmental Qualification Form.
1.7.2 General Specifications
Table 1-2 General Specifications
Characteristic Specification
TSO, JTSO; GTX 330 TSO-C112*, JTSO-2C112a.
TSO, JTSO; GTX 330D TSO-C112*, JTSO-2C112a.
TSO, ETSO; GTX 330 w/ ES,
GTX 330D w/ ES
TSO-C166B, ETSO-C166a
TSO ENV CAT Refer to Environmental Qualification Form
FCC Authorization Emission Designator 12M0M1D
Applicable Documents
RTCA DO-160D, RTCA DO-181C, RTCA DO-260B,
EuroCAE ED-102A, EuroCAE ED-73A, EuroCAE ED-73B
Unit Software
RTCA DO-178B Level C/D (refer to Section 1.8.1 for specific
applicability)
Complex Electronic Hardware
RTCA/DO-254 Level C (refer to Section 1.8.1 for specific
applicability)
Temperature Range -45°C to +70°C (continuous operation)
Humidity
95% @ +50°C for 6 hours; 85% @ +38°C for 16 hours;
Tested to Category A in DO-160D
Altitude 55,000 Feet
Transmitter Frequency 1090 MHz ±1 MHz
Transmitter Power 125 Watts minimum, 250 Watts nominal.
Receiver Frequency 1030 MHz
Receiver Sensitivity -74 dBm nominal for 90% replies
Mode A Capability 4096 Identification Codes
Mode C Altitude Capability 100 Foot increments from -1000 to 62,700 feet.
Mode S Altitude Capability
25 Foot increments from -1000 to 50,175 feet with suitable serial
data altitude. 100 Foot increments from -1000 to 62,700 feet.
*Refer to Section 2.2.1 Configurations Available, for TSO class.
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